Apparatus for making armatures



Ot. 13, 1925q 1,556,893

z R, H. AHLERS ET AL APPARATUS FOR MAKNG ARMATURES Filed Nov. 20. 1923 4 Sheets-Sheet 2 15H. AHLERS ET A1.

` APPARATUS FOR MAKING AHMATURES Filed Nov. 2O. E23 4 Sheets-Sheet 3 @Wd/4MM@ Oct. i3 1925 Fs. AHLERS ET AL APPARATUS FOR MAKING ARMTURES Filed NOV. 2G. 1983 4 Sheets-511681: 4

Patented Oct. 13, 1925.

UNITED STATES ROBERT H. AHLERs AND EARL M; FOLK,` OE DA1/'Torr OHIO; nssroivons To? THE DAY-f TON ENGINEERING LABORATORIES: COMPANY; OE nnYToN, orrro, A` CORPORATION OF' OHIO.

PATE orifice-f'.

AP,ll'UklRfAJIUS.` FOB MAKING .ARMATUREST Application inedi November 2o, 1923-. serialv Ne. 615,971.

To all whom t may concern.' f

Beit known that RoBERT AHLERs and EARL M. Porn, citizens o-f the United States of America, residing at Dayton county of Montgomery, State of Ohio, have invented certain new and useful` Improvements in Apparatus for Making Armatures,of which the followingI is a full, clear, and enact` descrip-` tion.

This invention relates. to the manufacture of armatures forV dynamo electric machines, and particularly to the type of armature haw ing notched risers for receiving the leads of the armature conductors. l

The objects of the invention include the mounting of a commutator having notched risers upon the, armature shaft in correct location with respectk tothe armature conductor leadsyand the moving of these leads into the notches of their respective risers.

In order to accomplish this object one forni of the inventionincludes a fixture4 fory holding an armature with the commutator leads and one end of the armature shaft eX- posed and power means for driving a, commutator having a hollow core or hub over `the: exposed end of the shaft,` means for locating the conductor leadsso they will project through the proper notches in therisers of the commutator as the commutator is driven over the shaft. y

A@ther and further objects of the `present invention will `be apparent vfrom the follogvsh-` ing; description, reference being had to. the accompanying` drawings wherein one. form. of the present invention is` clearly shown. In the drawings: l i Fig. l is a front elevation of one form-4 of machine embodying the present invention.

Fig; 2 is a plan view thereof. y F ig. 3 is a sectional view on the line` 3-3 of F ig. l, certain parts being shown in positions differing from Fig. l..

Fig. 4 is. a. fragmentary longitudinal sectional view on a scale 'larger than Figs. l,- 2 and 3 lthe sectionrbeing taken on 1111sk 1 -tof Fig. 3.] y i. i Fig. 5 is a fragmentary sectional view on the same scale as Fig. Ll, showing the coinmutator indexing bar,y and thel commutatolfv in position corresponding to. Fig. l. l

Fig. @is a view partly :in plan and partly sages providing in section; of the armature holding lXture showing certain parts in positions corre,` sponding-toy Fig; l, the section being taken 1' on line 6-6. of Fig. l.

Figs. 7 and 8 are sectionall views on1 the lilies 7-7 and 8-8 of` Fig. 4.

Fig.l 9 isa fragmentary plan view of a block for guiding certain movable elements.

shown in Figs; 7 and 8. y

Referring to the drawings, 20 a base having` supporting pedestals 2l and 22 connected with and supported with head 23. The head 23 provides a cylinder 24, and a piston rod bearing 25 concentric withthe cylinder for receiving a piston rod` 26 attached to a piston 27. Except for the piston rod bearing 25, the cylinder .24 is closed at its lower end and the upper end is closed by cover 28 attached by screws 29.y The pis ton 27 is actuated by a compressed `fluid such. asair which is introducedy in the usual manner `upon the upper and lower'sides of y thepiston by means ofl pipes 3.0 and- 311espectively connected with a supply pipe 32 byl means of, a valve 33 which selects pasl communication between pipe 32 and either one of pipes 30 `and S1.

'Ifhe-y pedestal 22 supports collars 4 0 and 41' which may be mounted in, any desired position of adjustment by means of set screws 42 and drespectively. Between the collars, 40 and ll there is located a hub 4:4 of bracket 45 y. which carries at its free end a bearing.

4:6. The hub 4A is provided with a notch 47" for receiving a lug 4.8 extending from the f collar 40.v Thus therotation of the bracket 4 5 is limited. The bearing 46 supports a plunger` 5()` carrying adjacent itsupper end a collar 5l. A. spring 52 is loc-ated between the bearing` 4:6 and the collar 51 attached to theplunger and tends to press the plunger upwardly toward a pressure block 53 attachedv by a set screw 54; to the pistonv designates block 60 is adapted to receive one or more armature shaft supporting blocks 63, the size of Which depends on the size of the armature to vbe operated upon. The block 63 is provided with a central bore 64v for receiving an armature shaft, the bore being coaxial With the plunger 50. Block 63 is provided With a shank 65 Which is received by an aperture in block 60 which is also coaxial With plunger 50.

For the purpose of locating an armature core the block 60 is provided with a transverse radially extending bore 66 for receiving' -a. pointed plunger 67 having a head 68. 'A spring 69 retained by plug 70 bears against the headof plunger 67 L For the purpose of guiding certain transversely and radially movable elements there is provided a. guide block 71 Which, refer-` spaced from the block 60 to provide a space which is occupied by* a cammingring 76 which is journalled on the exterior of the ring 72 of block 71. The camming ring 76 is provided with a` circular row of inclined slots 77 and With an operating handle7 8.

The guide block 71 supports ak circular' plate 80 having a fiange 81 and a hub' 82 which spaces the flange 81 from the.,upper surface of the guide block 71. The plate 80 isA attached by screws 83.A The space between the block 71 and the flange 81 is occupied by a camming plate 84 which is journalled on therhub 82 and is provided With a circular row of inclined slots 85 and with an operating handle 86. Plate 84carriesa stud 87 having a reduced upper end 88.

The plate supports a semi-cylindrical bracket 90 attached tothe plate byscreyvs The innerV Wally -92 of the kbracket 90 ing a fulcrum for a semi-circular plate 95 provided with a semi-circular notch 96 for receiving the plunger 50. When the plate 95 is in the positionl shown in Figs. 3, 4 and 5. The plate 95 is actuated by handle 8 6 by means which includes t-Wo spaced leaf spring members 97 and 98at-tached screw 99: to an extension 100 provided. on the plate 95.

The springs 97 and 98 normally bear against opposite sides of the reducedend 88 of stud 87. Obviouslytheplate 95 is rotated by operating the handle 86.l

Apparatus for indexing the commutator which is assembled by means of this machine includes a pointed indexing slide 101, which slides in a notch provided in a boss 103 extendingupwardly from the plate 80. The slide 101 is maintained in position by means of a plate 104 having a slot 105 for receiving a handle 106 attached tro the slide 101. The plate 104 is attached by screws 107 to the boss 103. The showing of this apparatus in F ig. 1 has been omitted for sake of clearness.

-During the assembly' of the commutator upo-n the armature shaft, the bar conductors of the armature are clamped in position by apparatusWhich includes a plurality of slides 110, each ofy which slides through one of the spaces or notches 74 provided' in the guide plate 71. Each slide 110 is provided with an inclined'end surface 111 formed according to the inclination to the vertical of the armature conductois. Eachy slide is provided with a. stud 11.2 received by one of the inclined camming grooves 77 of plate 76. yReferring to Figs. 4, 6, 7 and 8, rotation kof the handle 78 clockwise Will cause the slides 110 to move from the position shown in Fig. 6 tothe position shown in Fig. 8.

The apparatus for locating the ends of the armature conductors correctly preparatory to receiving the. con'nnutator includes a plurality of radially movable slides which move in the notches 74. Each slide 115 is vprovided with inwardly projecting fingers 116 and 117 (see Fig. 7) and each slide carries a stud 118 received by one of the notches 85 of the plate 84. Rotation yof .the handle 86 counterfcloclnvise Will cause the slides115 to move radially inwardly for the purpose of locating the ends of the armature as Willbe explained more fully here# inafteri'p' Y A f Mode of operation.

The machine operates upon an armature` 120 havingv a. slotted coreV 121 mounted on; a shaft 122. The machine is conditioned as shown in Figs. 1 and 6. The armature is located in recess 62`With the lower end of shaft 122 received by block 63. Block 63 isinterchangeable with other blocks of varyingdimensions so that the shoulder' 123 (see Fig. 4) of the shaft 122 Will be located the proper distance vfrom the bottoni of recess 62 'in' order to locate armatures of different dimensions properly with respect to the fixture. The armature 120 is turned so that the spring pressed pin 67- is received byfone of the c'ore slots 124. The

armature is now located so that the upper end of shaft`122 is exposed and the ends ofthe armature conductors ready to be ackcurately locatedv soa-s to receive the coin-- 1nutator.` Each 'conductor ylead includes a straight portion. substantially` parallel With shaft 122 as* shown in Figs. 1 and 6.

lease-,893i

the shaft andr singularly olitset with respect to the core slot receiving the conductor.` Upon reference to 'lili-gs.` 4, 5:- and' 6l,V it will besecn-l tli'atthe ends of the conductors are locatedapproximately in tvvo concentric ci-rcul'anrows 125` and 126 and theends inoney row are substantially radially aligned re spectively with the ends in the other row. In other Words` the crond'uctorsf` ends are located in pairs which are substantially in; alignment. t

commutator 127 liaving`conneoted with each oommutatorbafr bendable riser portions- 128 and 129- fvhioh define notches for receiv` ing respectively the pairs of' conductorends, is. manually lbca-teduponthe upper endf V .t `e

" commutator is angularlyadjusted softhat the index` slide 191 points to one/,of the insulating' segn'ients between the commutator-bars. f 1

Then; theI handles 78 and`86` are moved from the; lposition shown in Figs; 1 and 6 to the positionsshown in Figs. 2 and 4' to cause the slides 110` and 115 to move toward the armature intothe positions shown in- Fig.`

t and in Figs.` 7' and"8 respectively. the slides 1'15 move inwardly each one engages a pan: of conductor ends `125 `and7 126 and and to be located in correct angu'lalrposition so as' to be received by the proper commutarrlhe conductor ends are now driven over the shaft.

Thfeniovement of handle 86 from the position shown in Fig; 6 to that shown in Figs. 3 and t Will cause the platel 95I to be rotated intothe position shown in` these iigures the notch. 96v being aligned with the i plunger 50.. `By operating valve 33, fluid pressure is admit-ted to the upper end of cylinder and the plunger Will descend until the shoulder strikes the upper surface. of plate 95 which limits further downward movement of the plunger. The operation causes the commutator to be driven over the shaft as far as' shown in Fig li. The conductor ends have been entered be: tween the risers.

Thile the fluid pressure is turned off the handle 86 is returned to the position shown in Fig. 6, to retract the locating slides 115 and the plate 95, While the slides 11() remain in position shown in Fig. 8, to prevent any of the conductor leads being pulled away l from the commutatorin case a lead should sticl to a slide 110. This operation removes the bars 115 from the pathof movement of the commutator and the path 95 from the path of movement of the plunger shoulder 55. Then the handle 78 can be returned to the position shovvn in Fig. 6 to rotract the 'stripper slides 110. 1

Fluid pressure is admitted upon the up-A per sid'e et' pistonff Itofcaus'e! to: motie downwardly' until stopped by "the cylinder.v This operation `Will cause the commutator 12? toi be; 4forced down the shatt- 122 to the desired? 'distance` from the corey 121'. Fluidl pressure is'then. admitted upon the'. underside of tliepiston QM to permit the plunger50l to be rasedbyl spring 52 to the` position shown in Figwl;` The armature is removed and they apparatus `is= readyfor alsubsequent operation. By ani operation. off bending the.` riserv tangs 128`ajnd 1292* over tlrepair ofcon'duct'orends,-` the conductors are connected withV their respective commu-` tators. y i Incase" itA isi desiredt to removeV ypants mounted on block thel'braclet 45y can. be. rotated out of alignment therewith. lnythe condition of themacl'iine as:v shown in Figf,l 1,tl:1e ends of the plunger 50A are treeofl the plate 95 andi the pressure block 1532 y While they for'mzof' embodiment of the ineV venti-on i as herein disclosed? vconstitutes a preferred form, `it iste be understood that other forms might be adopted,` alli` coming Witlrin the scopel of the `claims which follow.

Wha-t is claimed is as fol-flows:` 1'. Apparatus for irranu'ilacturing arma-- tures having conductor* lea-dsl extending from the coreand received bynotched risers: of the commutator,comprising in combination, means forholding an armature coreI Withconductor leads extending therefrom, l means for locating' said leads so that they may `be received bythe commutator risers, andineans for' moving a commnitator end- Wi-se along the armature shaft so that-the connnutator risers Will'- receive` all loi? "the conductor leads` simultaneously. s 2*. ApparatusA for manufacturing armatureswhaving conducto-1.ql` leads extendingfrom lthe corehand received by notched risers loe of the commutator, comprising, in combination, means for holding an armature core Withconductor leads extending therefrom, means for engaging the leads to move them toward the armature shaft and for properly spacing the leads, and means for moving a commutator endwise along the armature shaft so that the commutator risers Will receive all of the conductor leads simultanef shaft sothat the commutator 'risers will receive allof'the conductor leads simultane ously.

. 4. Apparatus for manufacturing armatures having conductor leads extending from the core and received by notched risers of the commutator; comprising, in combination, means for holding anarmature core with conductor leads extending therefrom, notched members movable toward an armature for engaging the leads;y to move them toward the armature shaft, means forA pre-y venting the' leads moving away from ythe shaft when said notched ymembers recede t from the shaft.

5. Apparatus for manufacturing arma tures; having,A conductorv leads extending from the core and recelvedrbyy notched risers of the commutator, comprising, in combination, meansy for holding the armature core with conductor leads extending therefrom, devices for engaging the leads to move them toward the armature shaft and for properly spacing the leads, means for moving a com- 'mutator endvvise along the armature shaft so that the commutator risers will receive all of the conductor leads simultaneoulsy, a stop forlimiting the operation of the commutator moving means When the leads are 'engaged by said devices, and means for of thefbars simultaneouslytoward the con ductors. v ,y i

7. Apparatus for, manufacturing armatures Vhaving conductor leads extending from the core and received by notched risers ofthe commutator, comprising in combination, a fixture for supporting an armature, means for moving a commutator along the armatureI shafty toward the conductors, a plurality of bars adapted to move'toward the conductors and to locate them properly in order=to be received by the risers of the commutator, `a stop yfor limiting the operation of the commutatory moving means, and

means for moving the stop into opera-tive position and all of the bars simultaneouslyy toward the `conductors and for retracting said stop means and bars.

8. Apparatus for manufacturing arma` tures having conductor leads extending from the core and received by notched risers of the commutatorcomprising, in combination, a Iixtureffor supporting Lan armature, means for moving a commutator along the armature shaft toward the conductors, a plurality .of bars adaptedto move toward the conductors and each having a notch adaptedy to receive vcertain armature conductor leads in order to locate them properly to be received by a certain riser, means for advancing and retracting the bars simultaneously, a second set of bars located adjacent the first mentioned bars and each movable into contact Wit-h an armature conductor lead, in order to retain it inl posi tion While the locating bar is being retracted, and means for advancing and retracting the second set of bars.y

In testimony-whereof We hereto aflix our signatures. l v

- ROBERT H. AHLERS.

EARL M. FOLK. 

